- print_r: documentation ( source)
<?php
$merged = [
'a' => 'b',
'b' => 'c',
'c' => 'z',
'd' => 'a',
'e' => 'z'
];
$aliasesReduced = false;
while(!$aliasesReduced) {
$aliasesReduced = true;
foreach($merged as $originalId => &$mergedId) {
if (array_key_exists($mergedId, $merged)) {
$mergedId = $merged[$mergedId];
$aliasesReduced = false;
}
}
}
print_r($aliases);